BLACK + BLUM Microwavable Stainless Steel 30 oz Lunch Box Review

Specifications
| Brand | BLACK + BLUM |
|---|---|
| Dimensions | 2.9 x 7.5 x 5.6 in |
| Capacity | 30 oz |
| Material | Stainless Steel |
| Leakproof | Yes |
| Microwave Safe | Yes |
| Dishwasher Safe | Yes |
Pros
- Microwave safe
- Dishwasher safe
- Fits larger meals
Cons
- Interior non-watertight
- Plastic lid component
- Lid hand-washing
The Verdict
With a 30 oz capacity, this stainless steel lunch box suits full workday meals that need reheating. Its leakproof design, microwave-safe body, and dishwasher-safe cleanup make daily use simple. However, the interior is not watertight, and the plastic lid component needs hand-washing. Choose it for meal size and easy reheating, not for strict separation of wet foods or carefree cleaning.
Who it's for: Choose it if you carry generous meals, reheat them at work, and value a sturdy steel container over fully sealed food sections. Its 7.5-inch length gives larger portions room without making the box especially tall.
Who should skip it: Skip it if you need watertight separation for sauces, fruit, or other wet foods. The 2.9-inch height also suits broad meals better than layered lunches, and the lid needs hand-washing despite the dishwasher-safe box.
In-Depth Review
Performance
Performance earns a 7.7, with the useful label Holds temps reliably. The 30 oz capacity suits a full lunch, while the 7.5 x 5.6 inch footprint gives meals room to spread instead of stacking them deeply.
The claimed airtight, leakproof lid helps contain sauces during normal travel. Still, the interior is not watertight, so this box suits solid meals and thicker foods better than runny dishes. There is also no listed insulation type, so do not treat the stainless steel body as a cooler. The 2.9 inch height keeps the box low, but it leaves less room for tall foods.
Build Quality
Build quality scores 8.1, matching Tight seals, sturdy feel. The body uses 18/8 stainless steel, a practical choice for repeated meal use. Its 30 oz size also avoids the thin, cramped form found in smaller lunch boxes.
The leakproof claim points to a close-fitting lid, but the plastic lid component remains the main long-term concern. Plastic can show wear sooner than the steel body, especially if handled roughly. The 7.5 x 5.6 x 2.9 inch shape looks stable in a bag, yet its broad top may face more stress if packed under heavy items. Regular inspection of the seal makes sense.
Usability
Usability receives an 8.3 for Simple packing flow. The 30 oz interior gives you space for larger meals, and the 2.9 inch height makes the box easy to load with sandwiches, grains, pasta, or similar foods. The 7.5 x 5.6 inch base should also sit steadily on a desk or table.
Microwave-safe construction makes reheating more direct than transferring food to another dish. Remove the plastic lid component before heating. Dishwasher-safe cleaning helps with the stainless steel body, but the lid needs hand-washing. That extra step is small, though it weakens the otherwise simple cleanup routine.
Portability
Portability scores 7.8, or Carries comfortably, stays secure. The 7.5 x 5.6 x 2.9 inch dimensions create a wide, low profile that should fit many work bags without the bulk of a tall container. The 30 oz capacity is useful when a small lunch will not suffice.
This shape can be less flexible in narrow bags, where a slimmer base would slide into place more easily. The stainless steel material may also feel heavier than plastic, though no product weight is listed. The secure lid helps during transport, while the non-watertight interior means you should pack very liquid foods with care.
Value
Value earns an 8.2, described as Features worth the price. The combination of 30 oz capacity, 18/8 stainless steel, microwave safety, and dishwasher safety covers the main needs of a reusable lunch box. The 7.5 x 5.6 x 2.9 inch body also makes good use of its space.
Its value depends on whether you want larger portions and reheating in the same container. The non-watertight interior limits some meal choices, and the plastic lid component needs hand-washing. Those trade-offs do not erase the box's practical strengths, but they matter for anyone seeking carefree cleanup or liquid-heavy lunches.
Frequently Asked Questions
How much food fits in the BLACK + BLUM Microwavable Stainless Steel Lunch Box?
This lunch box holds 30 ounces of food. That size suits a full meal, such as pasta, rice with vegetables, a salad, or a sandwich with sides. Its 2.9 by 7.5 by 5.6 inch shape should fit many work and school bags.
Can I microwave the BLACK + BLUM stainless steel lunch box?
Yes. This lunch box is microwave safe, so you can reheat food in the container. Remove the lid or follow the product instructions before heating, since the lid includes a plastic component and may not have the same microwave rating as the steel body.
Is the BLACK + BLUM 30 oz lunch box leakproof?
The lunch box has a leakproof design that helps contain wet foods during transport. However, the interior is not watertight between areas of the container. Pack foods that release liquid with care, and keep soups or thin sauces in a separate sealed container.
Is the BLACK + BLUM lunch box easy to clean?
The stainless steel body is dishwasher safe, which makes routine cleaning simple. The lid needs hand washing, especially around its plastic parts and seal. Rinse food residue soon after use to reduce buildup in the lid area.
Is this BLACK + BLUM lunch box good for taking larger meals to work?
Yes. The 30 ounce capacity gives you room for a larger lunch than many compact snack boxes. It works well for reheated meals and everyday packed food, although its non-watertight interior makes it less suitable for carrying several liquid foods together.
What is the BLACK + BLUM lunch box made from?
The main container uses stainless steel, which gives it a sturdy surface for regular use. The lid also contains plastic, so it is not an all-metal lunch box. The steel body is dishwasher safe and microwave safe according to the listed product specifications.
Final Verdict
This is a recommended buy for people who want a durable lunch box that can handle a full, larger meal. Its microwave-safe stainless steel body and dishwasher-safe design make daily use simple. However, the interior is not watertight, so it cannot safely separate runny foods, and the plastic lid piece needs hand-washing. Those limits keep it from being a universal choice, but its sturdy build and useful capacity earn its 8.0 rating.
Choose it if you value roomy portions, easy reheating, and strong everyday construction more than sealed compartments or fully effortless cleaning. If that matches your meals and kitchen routine, this is a sound pick.